Artificial four-branch blood vessel stented elephant trunk and fixing device thereof

Abstract

The invention discloses an artificial four-branch elephant trunk blood vessel with a stent and components thereof. A main body blood vessel is divided into two parts. The first part is as follows: a flexural artificial blood vessel is designed according to the anatomical characteristics of an aortic arch of a human body, three branch blood vessels are divergent from the middle part on the side of a big bend, and one branch blood vessel is divergent from the side which is near to a small bend. The second part is as follows: a section of artificial blood vessel with a stent is designed, and artificial blood vessels without stents are respectively arranged on two sides of the stent for facilitating secondary operation. An outer sheath, an inner core and a cutting knife are additionally arranged for conveying and releasing the second part of the main body blood vessel. A fixing clamp is adopted for tightening a fixing ring for performing vascular anastomosis at the distal end of the aortic arch. The device is used for the operation of adding a stented elephant trunk and replacing an aortic arch, thus the number of anastomotic stomas can be reduced, the difficulty of the operation is reduced, and convenience is provided for the secondary operation.

Description

technical field [0001] The invention relates to a surgical instrument, which is used for total aortic arch replacement and stent elephant trunk artificial blood vessel implantation. It belongs to the technical field of cardiovascular surgical instruments. Background technique [0002] Aortic dissection can be described as a "time bomb" in the patient's body, and it may explode prematurely at any time. In particular, acute aortic dissection is a critical illness, and about 50% of patients die within 48 hours of onset, that is, about 1% per hour. [0003] According to whether the lesion involves the ascending aorta, aortic dissection can be divided into type A and type B. Lesions involving the ascending aorta are classified as type A, and lesions that do not involve the ascending aorta are classified as type B. Type A aortic dissection requires surgery. Currently, for type A aortic dissection involving the aortic arch and descending aorta, the ascending aorta and aortic ar...

AI Technical Summary

Problems solved by technology

In the existing intraoperative stent blood vessels, only the proximal part of the artificial blood vessel is not attached with a stent. If a second operation is required here, it is difficult to perform vascular occlusion and vascular anastomosis, and the original intraoperative stent artificial blood vessel needs to be removed

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